Install

go install github.com/sloweax/sockc@latest # binary will likely be installed at ~/go/bin

Usage

usage: sockc [-h] [-a] [-d] [-j num] [-n val] [-o file] [-t host] [-u] [-v var] [-w seconds]
             [-x url] [file...]

options:
    -h, --help                shows usage and exits
    -a, --append              open output file in append mode
    -d, --detail              include the time to establish connection in the fragment
                              of the proxy url (in seconds)
    -j, --workers num         number of concurrent workers (default: 8)
    -n, --network val         network to connect to -t (default: tcp)
    -o, --output file         valid proxy output file (default: stdout)
    -t, --target host         target host to check proxy validity. see "-v" option
                              (default: google.com:443)
    -u, --unique              don't scan the same proxy url twice
    -v, --validity var        connect: validity by just connecting, tls: validity
                              by succesfull tls handshake (default: tls)
    -w, --timeout seconds     proxy connection timeout. 0 for no timeout (default:
                              10)
    -x, --proxy url           use proxy to connect to proxies
    file                      check proxies from file. if no file is provided it
                              is read from stdin

Example

$ cat proxies.txt
socks5://123.123.123.123:123
socks5://321.321.321.321:321

$ cat proxies.txt | sockc
socks5://123.123.123.123:123
# errors are printed to stderr
socks connect tcp 321.321.321.321:321->google.com:443: dial tcp: lookup 321.321.321.321: no such host

Supported protocols

• socks5 {socks5,socks5h}://user:password@host:port
• shadowsocks ss://method:password@host:port (not base64 encoded)

custom protocols are supported by implementing golang.org/x/net/proxy's proxy.ContextDialer and registering it with proxy.RegisterDialerType()